PIC16C57C-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C57C-20E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 3KB OTP (One-Time Programmable) memory and operating at 20MHz. This device is classified as Active product status and is suitable for embedded applications requiring fixed firmware implementation. Finding equivalent or substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when inventory constraints occur, or when design flexibility for firmware updates is required.

Substiute Parts

PIC16C57C-20E/SS

Microchip TechnologyIn Stock: 803PIC16C57C-20E/SS Datasheet

Current PartRFQ

PIC16F57-E/SS

Microchip TechnologyIn Stock: 2036PIC16F57-E/SS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C57C-20E/SS is determined by the following critical parameters:

• Core Processor Architecture: Must be PIC to maintain instruction set compatibility
• Core Size: Must remain 8-Bit
• Program Memory Size: Must be 3KB (2K x 12) to accommodate existing firmware
• RAM Size: Must be 72 x 8 for data storage compatibility
• Number of I/O: Must be 20 to maintain pin-level functionality
• Speed: Must be 20MHz or greater to meet timing requirements
• Voltage Supply Range: Must encompass or exceed 3V ~ 5.5V operating range
• Operating Temperature Range: Must encompass -40°C ~ 125°C
• Package / Case: Must be 28-SSOP for PCB layout compatibility
• Mounting Type: Must be Surface Mount

The PIC16F57-E/SS qualifies as a direct substitute because it maintains all critical electrical and mechanical parameters while upgrading the program memory type from OTP to FLASH, enabling reprogrammability without changing the physical or functional interface.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F57-E/SS is a qualified substitute for the PIC16C57C-20E/SS based on the following engineering criteria:

• Electrical Compatibility: All critical electrical parameters match or exceed the original specification. The substitute's voltage supply range (2V ~ 5.5V) is wider than the main part (3V ~ 5.5V), providing enhanced flexibility for low-voltage applications.

• Mechanical Compatibility: Both devices use identical 28-SSOP packaging with matching pin counts and I/O configuration, ensuring direct PCB compatibility without layout modifications.

• Functional Compatibility: Identical core processor architecture, memory size, RAM capacity, and peripheral set (POR, WDT) ensure instruction-level and functional compatibility.

• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements.

• Product Status: Both devices are classified as Active, ensuring continued manufacturer support and availability.

• Memory Technology Upgrade: The transition from OTP to FLASH memory type enables firmware reprogrammability, providing design flexibility without compromising any electrical or mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F57-E/SS be used as a direct replacement for the PIC16C57C-20E/SS in existing designs?

A: Yes. The PIC16F57-E/SS maintains identical pin configuration, package dimensions, electrical specifications, and functional capabilities. No PCB modifications or design changes are required for substitution.

Q: What is the primary difference between these two parts?

A: The main difference is program memory type. The PIC16C57C-20E/SS uses OTP (One-Time Programmable) memory, while the PIC16F57-E/SS uses FLASH memory. FLASH memory allows multiple reprogramming cycles, whereas OTP memory can only be programmed once during manufacturing.

Q: Are there any voltage supply differences that affect circuit design?

A: The PIC16F57-E/SS has a wider voltage supply range (2V ~ 5.5V) compared to the main part (3V ~ 5.5V). This provides additional flexibility for low-voltage applications. Existing designs operating within 3V ~ 5.5V remain fully compatible.

Q: Do both parts have the same number of I/O pins and functionality?

A: Yes. Both devices feature 20 I/O pins and identical peripheral support (POR, WDT). Pin assignments and functional capabilities are identical.

Q: Is the 28-SSOP package identical for both parts?

A: Yes. Both parts use the same 28-SSOP package with 0.209" width and 5.30mm dimensions. PCB footprints and assembly processes are identical.

Q: Are there any compliance or regulatory differences?

A: No. Both parts maintain ROHS3 compliance and REACH Unaffected status. Regulatory requirements are identical.

Q: What is the operating temperature range for both devices?

A: Both devices operate across -40°C to 125°C (TA), ensuring compatibility across industrial and extended temperature applications.